Well, it happened to me last week. To earn a little extra money I was out on Saturday to tidy up a creek near some homes. Just me and a pair of trimmers in the back. When I got there I noticed the mix fuel cans were empty and the employees left two empty 2-stroke oil bottles in the truck without telling me anything !! There was a guy out in his yard that happened to be a customer of mine so I begged him for some oil. All he had was automotive oil and some SAE 30. I went to try other houses only to find people with angry faces for disturbing their Saturday morning nap. Next I drove 5 miles to a small gas station which was closed for renovation . The next station was 20+ miles away and just not worth it. So I went back and mixed 1 gall. of gas with the 4-stroke SAE 30 I got in a 1:25 ratio. I poured the ugly fluid in my FS85 which is on it's last leg and only used as backup. The machine smoked and smelled a bit but ran fine. After working about 1 1/2 hours I turned round to mow the other slope of the creek when the customer came up to me as he managed to find some 2-stroke oil. I thanked him and gave him a price cut next time I do edging. Finished the day and made $175 solo. I'll be checking the stihl today to see how she does. Anyone ever ran out of 2-stroke oil or any oil for that matter ?